US4076019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthopedic cast construction
Assignee: Individual
•
Filing: 1976-08-16
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Granted: 1978-02-28
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Expires: 1996-08-16
Abstract
Abstract An improved orthopedic cast construction is disclosed. It is intended for application to broken bones, sprains, etc. The improved construction utilizes an elastic sleeve for those instances where the cast is placed on a limb, a second layer of spooled felting material which serves as a buffer against the elastic sleeve, and a third layer formed of a plaster bandage which is applied in multiple wraps soaked in water for the purpose of hardening into a supportive cast. The improvement comprises a felted layer of polyester or cotton fibers with ground silica-gel to adsorb perspiration from the body to keep the cast dry after installation and draws water out of the plaster media to enhance its drying. This protects and extends the life of the cast. It improves comfort to the patient.
Inventors
- 👤 Bernard S. Sain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:32
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
39 words
For use in a built up cast in orthopedic surgical work, a felted fibrous material having impregnated therein a water adsorbing agent of silica-gel or alumina which material is to be placed on the interior of a plastic cast.
Claim 2
Dependent Claim
39 words
For use in a built up cast in orthopedic surgical work, a felted fibrous material having impregnated therein a water adsorbing agent of silica-gel or alumina which material is to be placed on the interior of a plastic cast.
Claim 3
Dependent Claim
33 words
The felted fibrous material of claim 1 wherein said fibrous material is formed into a pad of specified thickness and includes said adsorbing agent as a granulated material in the interstical openings therein.
Claim 4
Dependent Claim
21 words
The felted fibrous material of claim 1 wherein said adsorbing agent is ground to a fineness as small as 200 mesh.
Claim 5
Dependent Claim
19 words
The felted fibrous material of claim 1 wherein said fibrous material includes a cotton fiber pad impregnated with silica-gel.
Claim 6
Independent Claim
66 words
A method of forming a cast on a patient comprising the step of placing moistened plaster bandages on a patient to form a cast, which cures on the patient after the passage of time, and including the step of positioning on the interior of said cast a fibrous material having impregnated therein a water adsorbing agent of silica-gel or alumina prior to curing of the cast.
Claim 7
Independent Claim
66 words
A method of forming a cast on a patient comprising the step of placing moistened plaster bandages on a patient to form a cast, which cures on the patient after the passage of time, and including the step of positioning on the interior of said cast a fibrous material having impregnated therein a water adsorbing agent of silica-gel or alumina prior to curing of the cast.
Claim 8
Dependent Claim
32 words
The method of claim 5 including the step of forming a fibrous layer of multiple wraps beneath the cast prior to curing which fibrous layer includes the water adsorbing material impregnated therein.
Claim 9
Dependent Claim
22 words
The method of claim 6 wherein the "fibrous" layer is formed at a location to be exposed to perspiration of the patient.
Claim 10
Dependent Claim
27 words
The method of claim 5 including the step of initially wetting the plaster bandages with a water and alcohol solution prior to placing them on a patient.
Claim 11
Dependent Claim
16 words
The method of claim 8 wherein the water and alcohol are mixed about half and half.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |